Pipe-cutter.



UNITED STATES Patented May 1'7, 190 1.

PATENT OFFICE.

PIPE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 760,128, dated May 17,1904.

Application filed December '7, 1903. Serial No. 184,007. (No model.)

To all whom it concern:

Be it known that 1, ROBERT A. JACKSON, a citizen of the United States,residing at Norristown, in the county of Montgomery and State ofPennsylvania, have invented a new and useful Pipe-Cutter, of which thefollowing is a specification.

My invention relates to improvements in pipe-cutters, my object being toafford improved simple and eflicient means for cutting iron bars, tubes,or pipes whether the same be absolutely true and symmetrical or not,said means being adapted to occupy and be operated in aminimum amount ofspace.

My device is especially adapted to be employed in cutting pipe locatedin a ditch or excavation where very little room is permitted forsecuringthecutting device in place and for operating the same, and,further, my 1 device is so constructed that it may be secured inoperative position about the pipe and operated to out said pipe from anyside or direction required or made necessary by the peculiar shape ofthe excavation in which operation must take place or in View of saidbranches, joints, or other obstacles approximate thereto.

Referring to the drawings, Figure 1 is a front elevation of my device.Fig. 2' is a side elevation of same. Fig. 3 is an elevation of my deviceopposite that shown in Fig. 1. Fig. 1 is a cross-section on line 4 1 ofFig. 3.

Similar numerals refer to similar parts throughout the several views.

Referring to the drawings, the ring or yoke member 1 is splitdiametrically and pivotally hinged at 2 and provided with lugs 3 and 1.To one lug 4 is pivoted the eyebolt 5, which is threaded at its free endand adapted to drop into a slot in slug 3, whereby the nut 6, oper-'ating upon the threaded end of eyebolt 5, en-

gages with the lug 3 to clamp the two sections of the ring or yoke 1. Bythis arrangement it must be clear that the yoke 1 may be firmly clampedto a pipeor bar of slightly greater diameter, thereby dispensing withthe set-screw means of engagement commonly used in the prior art.

By loosening the nut 6 it is obvious that the eyebolt may be swung outof the slot in lug 3, and consequently out of engagement with lug 3,thereby permitting the opening of the ring or yoke 1 to permit theremoval of the same.

To one member of the ring or yoke 1 is cast or otherwise providedthe-extension-yoke 7, which has a bearing at 8 for the shaft 9. Astep-bearing for the other end of this shaft is provided at 10. Uponshaft 9 and rotatable therewithis mounted the pinion 11.

The shaft 9 may be rotated by a ratchet or other suitable means.

The pinion 11 is secured by a feather against rotation independently ofthe shaft, but so as to permit longitudinal movement of said pinion onsaid shaft for the purpose hereinafter to be described.

Rotatably secured to the yoke member 1 is the carrier member 12, whichis channeled and flanged. This member 12 isalso of split constructionsimilar to that of the ring or yoke member 1, being hinged at 13 andhaving lugs 14 and 15 and eyebolt 16 for securing its free ends.

The carrier member 12 is provided with four apertures 17, extending fromthe inner circumference of member 12 part way toward the outercircumference. In these apertures are slidably seated the bearing-boxes18, provided with the cutter rollers 19. The outward movement of thebearing-boxes 19 is limited by the screws 20, projecting into slots 21.It is obvious that by withdrawing the screws 20 from said slots 21 thebearing-boxes may be readily removed from the carrier 12. Thesecutter-rollers 19 are fed down automatically,

as follows: Star-wheels 22 are provided, which as they are carriedaround by the carrier member 12 strike with one of their points the lug23 on member 7, causing a partial revolution of said star-wheels. Thesestar-wheels are mounted on screws 27, which impinge the rear of thebearing-boxes 18, and thus cause a forward movement of saidbearing-boxes with each rotative movement of said star-wheels, thusfeeding the cutter-rollers 19 into the pipe or bar to be cut as thecarrier member 12 is rotated.

, carrier member 12. As above described, the

From an inspection of Fig. 4: it will be observed that spaces 2 1 and 25are provided between the yoke member 1 and carrier member 12. In view ofthese spaces and the construction of the flange and channel engagementof members 1 and 12 (shown in Fig. &) it is obvious that no independentaxial movement is permitted between said members 1 and 12; but there ispermitted a limited independent radial movement between said members 1and 12.

Upon the face of the carrier member 12 which is toward the yoke member 1is provided the gear 26, which is adapted to mesh with the pinion 11, sothat the rotating of pinion 11 will cause the rotative movement of thepinion 11 has a limited longitudinal movement on shaft 9 for the purposeof permitting it to accommodate itself to the transverse movement ofcarrier member 12 with respect to yoke member 1, just decribed. I Thepurpose of providing for this independent transverse movement betweenmembersl and 12 is to permit the member 12 to accommodate itself tounevenness existing inthe pipe or bar operated upon after the yokemember 1 has been rigidly clamped thereon.

It is obvious that the split construction of the yoke member and thecarrier member enables the device to be opened up and clamped upon thepipe to be cut in a very limited space, and from the fact that the yokemember may be clamped upon the pipe so as to bring the shaft 9projecting from any side thereof that may be desired it is obvious thatthe device may be placed upon the pipe in a position most convenient foroperation and so as to require the minimum amount of space thereabout.

The construction above described and illustrated in the drawings of thebearing-boxes 18 and cutter-rollers 19 are of the simplest and mostsubstantial character and such as may be readily. removed from thecarrier member ,12. It will also be seen that from the constructionabove shown and described when the carrier member 12 is rotated inonedirection the screws 27 will be moved bythe starwheels22 to drive thecutter-rollers 19 into I ment and permit independent radial movementtherebetween.

2. In a cutting device, the combination of a hinged yoke or clampingmember and a hinged carrier member rotatably secured thereto, theengagement between the clamping member and the carrier member being suchas to prevent independent axial movement and to permit independentradial movement therebetween.

3. In a cutting device, the combination of a yoke or clamping memberadapted to be clamped to the device to be operated upon, acutter-carrying member, channel-and-flange means for detachably securingthe carrying member to the yoke member so that the former may rotateabout the latter, a gear provided on said carrying member, a pinion forcooperating therewith, and a shaft for said pinion supported by saidyoke member, said pinion having an axial movement on itssupporting-shaft to correspond with the independent radial movementbetween the yoke and carrying members.

4:. In a cutting device, the combination of a yoke or clamping memberadapted to be clamped to the device to be operated upon, acutter-carrying member, channel-and-flange means for detachably securingthe carrying member to the yoke member so that the former may rotateabout the latter and so as to permit radial movement therebetween, agear provided on said carrying member, a pinion for cooperatingtherewith, and ashaft for said pinion supported by said yoke member,said pinion having an axial movement on its supporting-shaft tocorrespond with the independent radial movement between the yoke andcarrying members.

5. In a cutting device, the combination of a split-ringyoke or clampingmember adapted to be clamped to the object to be operated upon, asplit-ring cutter-carryingmember, channeland-flange means for detachablysecuring the carrying member to the yoke member so that the former mayrotate about the latter and so as topermit radial movement therebetween,and gear-and-pinion means operating between the yoke member and thecarrying member for causing the rotation of the latter.

6. In a cutting device, the combination of a clamping member adapted tobe clamped to the object to be operated upon, a cutter-carrying memberhaving channel and flange engagement with the clamping member, saidengagement being such as to permit of independent radial movementbetween said two members, radially-movable cutter-rollers seated in saidcarrying member, means for rotating said carrying member and automaticmeans for moving thec'utter-rollers as the carrier member is rotated.

7. Inacutting device, the combination of a clamping member adapted to beclamped to the object to be operated upon, a cutter-carrying memberhaving channel-and-flange engagement with the clamping member, havingindependent radial movement and rotatable thereon, and provided withradially-disposed recesses opening into its inner periphery,cutter-rollers and bearing-boxes for the same slidably seated in saidrecesses.

8. In a cutting device, the combination of a clamping member adapted tobe clamped to the object to be operated upon, a cutter-carrying memberhaving channel-and-flange engagement with the clamping member, havingindependent radial movement and rotatable there on and provided withradiallydisposed recesses opening into its inner periphery,cutterrollers and bearing-boxesfor the same slidably seated in saidrecesses, and automatic means for feeding said cutter-rollers into thematerial operated upon as the carrier member is rotated.

9. Ina cutting device, the combination of a clamping member, acutter-carrying member rotatably secured thereto provided with a gear,and a pinion adapted to cooperate with said gear supported by theclamping member, the engagement between the clamping member and thecarrying member being such as to pre vent independent axial movement andtopermit independent radial movement between said two members.

10. In a cutting device, the combination of a clamping member, acutter-carrying member having rotative engagement therewith, saidengagement being such as to prevent independent axial movement andpermit independent radial movement between said two members,cutter-rollers slidably mounted'in said carrying member, a gear providedon said carrying member and a pinion for cooperating therewith supportedby the clamping member supported by the clamping member and automaticmeans for feeding the cutter-rollers into the material as the carriermember is rotated.

12. In a cutting device, the combination of a clamping member, acutter-carrying member having rotative engagement therewith, saidengagement being such as to prevent independent axial movement andpermit independent radial movement between said two members,cutter-rollers slidably mounted in said carrying member, a gear providedon said carrying member and a pinion for cooperating therewith,supported by the clamping memher, said pinion having an axial movementto accommodate itself to the radial movement of the carrying member, andautomatic means for feeding the cutter-rollers into the material as thecarrier member is rotated.

13. In a cutting device, the combination of a clamping member, acutter-carrying member having rotative engagement therewith, saidengagement being such as to prevent independent axial movement andpermit independent radial movement between said two members,cutter-rollers slidably mounted in said carrying member, andstar-wheel-controlled screws in said carrying member and a lug on saidclampingmember to cooperate therewith, as automatic means for feedingthe cutterrollers into the material as the carrying memher is rotated.

14. In a cutting device, the combination of a clamping member, acutter-carrying member having rotative engagement therewith, saidengagement being such as to prevent independent axial movement andpermit independent radial movement between said two members,cutter-rollers slidably mounted in said carrying member, a gear providedon said carrying member, a pinion for cooperating therewith supported bythe clamping member, and star-wheel-controlled screws in said carryingmember and a lug on said clamping member to cooperate therewith, asautomatic means for feeding the cutter-rollers into the material as thecarrying member is rotated.

ROBT. A. J AOKSON.

Witnesses:

W. J. SINSFUFF, H. C. CRAWFORD.

